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net: trans_start cleanups
[deliverable/linux.git] / drivers / net / hp100.c
1 /*
2 ** hp100.c
3 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
4 **
5 ** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
6 **
7 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8 ** Extended for new busmaster capable chipsets by
9 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10 **
11 ** Maintained by: Jaroslav Kysela <perex@perex.cz>
12 **
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973A 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21 **
22 ** but it should also work with the other CASCADE based adapters.
23 **
24 ** TODO:
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
32 **
33 **
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
38 **
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
43 **
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47 **
48 ** 1.57c -> 1.58
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52 **
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
55 **
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
58 **
59 ** 1.56 -> 1.57
60 ** - updates for new PCI interface for 2.1 kernels
61 **
62 ** 1.55 -> 1.56
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
66 ** driver does reset
67 ** - included fix for Compex FreedomLine PCI adapter
68 **
69 ** 1.54 -> 1.55
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
73 **
74 ** 1.53 -> 1.54
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
80 **
81 ** 1.52 -> 1.53
82 ** - fixed bug in multicast support
83 **
84 */
85
86 #define HP100_DEFAULT_PRIORITY_TX 0
87
88 #undef HP100_DEBUG
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93 #undef HP100_DEBUG_TX
94 #undef HP100_DEBUG_IRQ
95 #undef HP100_DEBUG_RX
96
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/sched.h>
102 #include <linux/string.h>
103 #include <linux/errno.h>
104 #include <linux/ioport.h>
105 #include <linux/interrupt.h>
106 #include <linux/eisa.h>
107 #include <linux/pci.h>
108 #include <linux/dma-mapping.h>
109 #include <linux/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/delay.h>
115 #include <linux/init.h>
116 #include <linux/bitops.h>
117 #include <linux/jiffies.h>
118
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 #ifdef CONFIG_ISA
192 static const char *hp100_isa_tbl[] = {
193 "HWPF150", /* HP J2573 rev A */
194 "HWP1950", /* HP J2573 */
195 };
196 #endif
197
198 #ifdef CONFIG_EISA
199 static struct eisa_device_id hp100_eisa_tbl[] = {
200 { "HWPF180" }, /* HP J2577 rev A */
201 { "HWP1920" }, /* HP 27248B */
202 { "HWP1940" }, /* HP J2577 */
203 { "HWP1990" }, /* HP J2577 */
204 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
205 { "CPX0401" }, /* FreedomLine 100/VG */
206 { "" } /* Mandatory final entry ! */
207 };
208 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
209 #endif
210
211 #ifdef CONFIG_PCI
212 static DEFINE_PCI_DEVICE_TABLE(hp100_pci_tbl) = {
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
218 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
219 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
220 {} /* Terminating entry */
221 };
222 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
223 #endif
224
225 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
226 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
227 static int hp100_mode = 1;
228
229 module_param(hp100_rx_ratio, int, 0);
230 module_param(hp100_priority_tx, int, 0);
231 module_param(hp100_mode, int, 0);
232
233 /*
234 * prototypes
235 */
236
237 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
238 struct pci_dev *pci_dev);
239
240
241 static int hp100_open(struct net_device *dev);
242 static int hp100_close(struct net_device *dev);
243 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
244 struct net_device *dev);
245 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
246 struct net_device *dev);
247 static void hp100_rx(struct net_device *dev);
248 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
249 static void hp100_misc_interrupt(struct net_device *dev);
250 static void hp100_update_stats(struct net_device *dev);
251 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
252 static void hp100_set_multicast_list(struct net_device *dev);
253 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
254 static void hp100_start_interface(struct net_device *dev);
255 static void hp100_stop_interface(struct net_device *dev);
256 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
257 static int hp100_sense_lan(struct net_device *dev);
258 static int hp100_login_to_vg_hub(struct net_device *dev,
259 u_short force_relogin);
260 static int hp100_down_vg_link(struct net_device *dev);
261 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
262 static void hp100_BM_shutdown(struct net_device *dev);
263 static void hp100_mmuinit(struct net_device *dev);
264 static void hp100_init_pdls(struct net_device *dev);
265 static int hp100_init_rxpdl(struct net_device *dev,
266 register hp100_ring_t * ringptr,
267 register u_int * pdlptr);
268 static int hp100_init_txpdl(struct net_device *dev,
269 register hp100_ring_t * ringptr,
270 register u_int * pdlptr);
271 static void hp100_rxfill(struct net_device *dev);
272 static void hp100_hwinit(struct net_device *dev);
273 static void hp100_clean_txring(struct net_device *dev);
274 #ifdef HP100_DEBUG
275 static void hp100_RegisterDump(struct net_device *dev);
276 #endif
277
278 /* Conversion to new PCI API :
279 * Convert an address in a kernel buffer to a bus/phys/dma address.
280 * This work *only* for memory fragments part of lp->page_vaddr,
281 * because it was properly DMA allocated via pci_alloc_consistent(),
282 * so we just need to "retrieve" the original mapping to bus/phys/dma
283 * address - Jean II */
284 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
285 {
286 struct hp100_private *lp = netdev_priv(dev);
287 return ((u_long) ptr) + lp->whatever_offset;
288 }
289
290 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
291 {
292 return pci_map_single(lp->pci_dev, data,
293 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
294 }
295
296 /* TODO: This function should not really be needed in a good design... */
297 static void wait(void)
298 {
299 mdelay(1);
300 }
301
302 /*
303 * probe functions
304 * These functions should - if possible - avoid doing write operations
305 * since this could cause problems when the card is not installed.
306 */
307
308 /*
309 * Read board id and convert to string.
310 * Effectively same code as decode_eisa_sig
311 */
312 static __devinit const char *hp100_read_id(int ioaddr)
313 {
314 int i;
315 static char str[HP100_SIG_LEN];
316 unsigned char sig[4], sum;
317 unsigned short rev;
318
319 hp100_page(ID_MAC_ADDR);
320 sum = 0;
321 for (i = 0; i < 4; i++) {
322 sig[i] = hp100_inb(BOARD_ID + i);
323 sum += sig[i];
324 }
325
326 sum += hp100_inb(BOARD_ID + i);
327 if (sum != 0xff)
328 return NULL; /* bad checksum */
329
330 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
331 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
332 str[2] = (sig[1] & 0x1f) + ('A' - 1);
333 rev = (sig[2] << 8) | sig[3];
334 sprintf(str + 3, "%04X", rev);
335
336 return str;
337 }
338
339 #ifdef CONFIG_ISA
340 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
341 {
342 const char *sig;
343 int i;
344
345 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
346 goto err;
347
348 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
349 release_region(ioaddr, HP100_REGION_SIZE);
350 goto err;
351 }
352
353 sig = hp100_read_id(ioaddr);
354 release_region(ioaddr, HP100_REGION_SIZE);
355
356 if (sig == NULL)
357 goto err;
358
359 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
360 if (!strcmp(hp100_isa_tbl[i], sig))
361 break;
362
363 }
364
365 if (i < ARRAY_SIZE(hp100_isa_tbl))
366 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
367 err:
368 return -ENODEV;
369
370 }
371 /*
372 * Probe for ISA board.
373 * EISA and PCI are handled by device infrastructure.
374 */
375
376 static int __init hp100_isa_probe(struct net_device *dev, int addr)
377 {
378 int err = -ENODEV;
379
380 /* Probe for a specific ISA address */
381 if (addr > 0xff && addr < 0x400)
382 err = hp100_isa_probe1(dev, addr);
383
384 else if (addr != 0)
385 err = -ENXIO;
386
387 else {
388 /* Probe all ISA possible port regions */
389 for (addr = 0x100; addr < 0x400; addr += 0x20) {
390 err = hp100_isa_probe1(dev, addr);
391 if (!err)
392 break;
393 }
394 }
395 return err;
396 }
397 #endif /* CONFIG_ISA */
398
399 #if !defined(MODULE) && defined(CONFIG_ISA)
400 struct net_device * __init hp100_probe(int unit)
401 {
402 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
403 int err;
404
405 if (!dev)
406 return ERR_PTR(-ENODEV);
407
408 #ifdef HP100_DEBUG_B
409 hp100_outw(0x4200, TRACE);
410 printk("hp100: %s: probe\n", dev->name);
411 #endif
412
413 if (unit >= 0) {
414 sprintf(dev->name, "eth%d", unit);
415 netdev_boot_setup_check(dev);
416 }
417
418 err = hp100_isa_probe(dev, dev->base_addr);
419 if (err)
420 goto out;
421
422 return dev;
423 out:
424 free_netdev(dev);
425 return ERR_PTR(err);
426 }
427 #endif /* !MODULE && CONFIG_ISA */
428
429 static const struct net_device_ops hp100_bm_netdev_ops = {
430 .ndo_open = hp100_open,
431 .ndo_stop = hp100_close,
432 .ndo_start_xmit = hp100_start_xmit_bm,
433 .ndo_get_stats = hp100_get_stats,
434 .ndo_set_multicast_list = hp100_set_multicast_list,
435 .ndo_change_mtu = eth_change_mtu,
436 .ndo_set_mac_address = eth_mac_addr,
437 .ndo_validate_addr = eth_validate_addr,
438 };
439
440 static const struct net_device_ops hp100_netdev_ops = {
441 .ndo_open = hp100_open,
442 .ndo_stop = hp100_close,
443 .ndo_start_xmit = hp100_start_xmit,
444 .ndo_get_stats = hp100_get_stats,
445 .ndo_set_multicast_list = hp100_set_multicast_list,
446 .ndo_change_mtu = eth_change_mtu,
447 .ndo_set_mac_address = eth_mac_addr,
448 .ndo_validate_addr = eth_validate_addr,
449 };
450
451 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
452 u_char bus, struct pci_dev *pci_dev)
453 {
454 int i;
455 int err = -ENODEV;
456 const char *eid;
457 u_int chip;
458 u_char uc;
459 u_int memory_size = 0, virt_memory_size = 0;
460 u_short local_mode, lsw;
461 short mem_mapped;
462 unsigned long mem_ptr_phys;
463 void __iomem *mem_ptr_virt;
464 struct hp100_private *lp;
465
466 #ifdef HP100_DEBUG_B
467 hp100_outw(0x4201, TRACE);
468 printk("hp100: %s: probe1\n", dev->name);
469 #endif
470
471 /* memory region for programmed i/o */
472 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
473 goto out1;
474
475 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
476 goto out2;
477
478 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
479 #ifdef HP100_DEBUG
480 if (chip == HP100_CHIPID_SHASTA)
481 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
482 else if (chip == HP100_CHIPID_RAINIER)
483 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
484 else if (chip == HP100_CHIPID_LASSEN)
485 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
486 else
487 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
488 #endif
489
490 dev->base_addr = ioaddr;
491
492 eid = hp100_read_id(ioaddr);
493 if (eid == NULL) { /* bad checksum? */
494 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
495 goto out2;
496 }
497
498 hp100_page(ID_MAC_ADDR);
499 for (i = uc = 0; i < 7; i++)
500 uc += hp100_inb(LAN_ADDR + i);
501 if (uc != 0xff) {
502 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
503 err = -EIO;
504 goto out2;
505 }
506
507 /* Make sure, that all registers are correctly updated... */
508
509 hp100_load_eeprom(dev, ioaddr);
510 wait();
511
512 /*
513 * Determine driver operation mode
514 *
515 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
516 * force driver modes:
517 * hp100_mode=1 -> default, use busmaster mode if configured.
518 * hp100_mode=2 -> enable shared memory mode
519 * hp100_mode=3 -> force use of i/o mapped mode.
520 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
521 */
522
523 /*
524 * LSW values:
525 * 0x2278 -> J2585B, PnP shared memory mode
526 * 0x2270 -> J2585B, shared memory mode, 0xdc000
527 * 0xa23c -> J2585B, I/O mapped mode
528 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
529 * 0x2220 -> EISA HP, I/O (Shasta Chip)
530 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
531 */
532
533 #if 0
534 local_mode = 0x2270;
535 hp100_outw(0xfefe, OPTION_LSW);
536 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
537 #endif
538
539 /* hp100_mode value maybe used in future by another card */
540 local_mode = hp100_mode;
541 if (local_mode < 1 || local_mode > 4)
542 local_mode = 1; /* default */
543 #ifdef HP100_DEBUG
544 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
545 hp100_inw(OPTION_LSW));
546 #endif
547
548 if (local_mode == 3) {
549 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
550 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
551 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
552 printk("hp100: IO mapped mode forced.\n");
553 } else if (local_mode == 2) {
554 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
555 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
556 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
557 printk("hp100: Shared memory mode requested.\n");
558 } else if (local_mode == 4) {
559 if (chip == HP100_CHIPID_LASSEN) {
560 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
561 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
562 printk("hp100: Busmaster mode requested.\n");
563 }
564 local_mode = 1;
565 }
566
567 if (local_mode == 1) { /* default behaviour */
568 lsw = hp100_inw(OPTION_LSW);
569
570 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
571 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
572 #ifdef HP100_DEBUG
573 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
574 #endif
575 local_mode = 3;
576 } else if (chip == HP100_CHIPID_LASSEN &&
577 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
578 /* Conversion to new PCI API :
579 * I don't have the doc, but I assume that the card
580 * can map the full 32bit address space.
581 * Also, we can have EISA Busmaster cards (not tested),
582 * so beware !!! - Jean II */
583 if((bus == HP100_BUS_PCI) &&
584 (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
585 /* Gracefully fallback to shared memory */
586 goto busmasterfail;
587 }
588 printk("hp100: Busmaster mode enabled.\n");
589 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
590 } else {
591 busmasterfail:
592 #ifdef HP100_DEBUG
593 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
594 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
595 #endif
596 /* In this case, try shared memory mode */
597 local_mode = 2;
598 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
599 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
600 }
601 }
602 #ifdef HP100_DEBUG
603 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
604 #endif
605
606 /* Check for shared memory on the card, eventually remap it */
607 hp100_page(HW_MAP);
608 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
609 mem_ptr_phys = 0UL;
610 mem_ptr_virt = NULL;
611 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
612 virt_memory_size = 0;
613
614 /* For memory mapped or busmaster mode, we want the memory address */
615 if (mem_mapped || (local_mode == 1)) {
616 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
617 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
618
619 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
620 printk("hp100: Can only use programmed i/o mode.\n");
621 mem_ptr_phys = 0;
622 mem_mapped = 0;
623 local_mode = 3; /* Use programmed i/o */
624 }
625
626 /* We do not need access to shared memory in busmaster mode */
627 /* However in slave mode we need to remap high (>1GB) card memory */
628 if (local_mode != 1) { /* = not busmaster */
629 /* We try with smaller memory sizes, if ioremap fails */
630 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
631 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
632 #ifdef HP100_DEBUG
633 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
634 #endif
635 } else {
636 #ifdef HP100_DEBUG
637 printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
638 #endif
639 break;
640 }
641 }
642
643 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
644 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
645 local_mode = 3;
646 virt_memory_size = 0;
647 }
648 }
649 }
650
651 if (local_mode == 3) { /* io mapped forced */
652 mem_mapped = 0;
653 mem_ptr_phys = 0;
654 mem_ptr_virt = NULL;
655 printk("hp100: Using (slow) programmed i/o mode.\n");
656 }
657
658 /* Initialise the "private" data structure for this card. */
659 lp = netdev_priv(dev);
660
661 spin_lock_init(&lp->lock);
662 strlcpy(lp->id, eid, HP100_SIG_LEN);
663 lp->chip = chip;
664 lp->mode = local_mode;
665 lp->bus = bus;
666 lp->pci_dev = pci_dev;
667 lp->priority_tx = hp100_priority_tx;
668 lp->rx_ratio = hp100_rx_ratio;
669 lp->mem_ptr_phys = mem_ptr_phys;
670 lp->mem_ptr_virt = mem_ptr_virt;
671 hp100_page(ID_MAC_ADDR);
672 lp->soft_model = hp100_inb(SOFT_MODEL);
673 lp->mac1_mode = HP100_MAC1MODE3;
674 lp->mac2_mode = HP100_MAC2MODE3;
675 memset(&lp->hash_bytes, 0x00, 8);
676
677 dev->base_addr = ioaddr;
678
679 lp->memory_size = memory_size;
680 lp->virt_memory_size = virt_memory_size;
681 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
682
683 if (lp->mode == 1) /* busmaster */
684 dev->netdev_ops = &hp100_bm_netdev_ops;
685 else
686 dev->netdev_ops = &hp100_netdev_ops;
687
688 /* Ask the card for which IRQ line it is configured */
689 if (bus == HP100_BUS_PCI) {
690 dev->irq = pci_dev->irq;
691 } else {
692 hp100_page(HW_MAP);
693 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
694 if (dev->irq == 2)
695 dev->irq = 9;
696 }
697
698 if (lp->mode == 1) /* busmaster */
699 dev->dma = 4;
700
701 /* Ask the card for its MAC address and store it for later use. */
702 hp100_page(ID_MAC_ADDR);
703 for (i = uc = 0; i < 6; i++)
704 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
705
706 /* Reset statistics (counters) */
707 hp100_clear_stats(lp, ioaddr);
708
709 /* If busmaster mode is wanted, a dma-capable memory area is needed for
710 * the rx and tx PDLs
711 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
712 * needed for the allocation of the memory area.
713 */
714
715 /* TODO: We do not need this with old cards, where PDLs are stored
716 * in the cards shared memory area. But currently, busmaster has been
717 * implemented/tested only with the lassen chip anyway... */
718 if (lp->mode == 1) { /* busmaster */
719 dma_addr_t page_baddr;
720 /* Get physically continous memory for TX & RX PDLs */
721 /* Conversion to new PCI API :
722 * Pages are always aligned and zeroed, no need to it ourself.
723 * Doc says should be OK for EISA bus as well - Jean II */
724 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
725 err = -ENOMEM;
726 goto out2;
727 }
728 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
729
730 #ifdef HP100_DEBUG_BM
731 printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
732 #endif
733 lp->rxrcommit = lp->txrcommit = 0;
734 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
735 lp->txrhead = lp->txrtail = &(lp->txring[0]);
736 }
737
738 /* Initialise the card. */
739 /* (I'm not really sure if it's a good idea to do this during probing, but
740 * like this it's assured that the lan connection type can be sensed
741 * correctly)
742 */
743 hp100_hwinit(dev);
744
745 /* Try to find out which kind of LAN the card is connected to. */
746 lp->lan_type = hp100_sense_lan(dev);
747
748 /* Print out a message what about what we think we have probed. */
749 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
750 switch (bus) {
751 case HP100_BUS_EISA:
752 printk("EISA");
753 break;
754 case HP100_BUS_PCI:
755 printk("PCI");
756 break;
757 default:
758 printk("ISA");
759 break;
760 }
761 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
762
763 if (lp->mode == 2) { /* memory mapped */
764 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
765 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
766 if (mem_ptr_virt)
767 printk(" (virtual base %p)", mem_ptr_virt);
768 printk(".\n");
769
770 /* Set for info when doing ifconfig */
771 dev->mem_start = mem_ptr_phys;
772 dev->mem_end = mem_ptr_phys + lp->memory_size;
773 }
774
775 printk("hp100: ");
776 if (lp->lan_type != HP100_LAN_ERR)
777 printk("Adapter is attached to ");
778 switch (lp->lan_type) {
779 case HP100_LAN_100:
780 printk("100Mb/s Voice Grade AnyLAN network.\n");
781 break;
782 case HP100_LAN_10:
783 printk("10Mb/s network (10baseT).\n");
784 break;
785 case HP100_LAN_COAX:
786 printk("10Mb/s network (coax).\n");
787 break;
788 default:
789 printk("Warning! Link down.\n");
790 }
791
792 err = register_netdev(dev);
793 if (err)
794 goto out3;
795
796 return 0;
797 out3:
798 if (local_mode == 1)
799 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
800 lp->page_vaddr_algn,
801 virt_to_whatever(dev, lp->page_vaddr_algn));
802 if (mem_ptr_virt)
803 iounmap(mem_ptr_virt);
804 out2:
805 release_region(ioaddr, HP100_REGION_SIZE);
806 out1:
807 return err;
808 }
809
810 /* This procedure puts the card into a stable init state */
811 static void hp100_hwinit(struct net_device *dev)
812 {
813 int ioaddr = dev->base_addr;
814 struct hp100_private *lp = netdev_priv(dev);
815
816 #ifdef HP100_DEBUG_B
817 hp100_outw(0x4202, TRACE);
818 printk("hp100: %s: hwinit\n", dev->name);
819 #endif
820
821 /* Initialise the card. -------------------------------------------- */
822
823 /* Clear all pending Ints and disable Ints */
824 hp100_page(PERFORMANCE);
825 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
826 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
827
828 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
829 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
830
831 if (lp->mode == 1) {
832 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
833 wait();
834 } else {
835 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
836 hp100_cascade_reset(dev, 1);
837 hp100_page(MAC_CTRL);
838 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
839 }
840
841 /* Initiate EEPROM reload */
842 hp100_load_eeprom(dev, 0);
843
844 wait();
845
846 /* Go into reset again. */
847 hp100_cascade_reset(dev, 1);
848
849 /* Set Option Registers to a safe state */
850 hp100_outw(HP100_DEBUG_EN |
851 HP100_RX_HDR |
852 HP100_EE_EN |
853 HP100_BM_WRITE |
854 HP100_BM_READ | HP100_RESET_HB |
855 HP100_FAKE_INT |
856 HP100_INT_EN |
857 HP100_MEM_EN |
858 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
859
860 hp100_outw(HP100_TRI_INT |
861 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
862
863 hp100_outb(HP100_PRIORITY_TX |
864 HP100_ADV_NXT_PKT |
865 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
866
867 /* TODO: Configure MMU for Ram Test. */
868 /* TODO: Ram Test. */
869
870 /* Re-check if adapter is still at same i/o location */
871 /* (If the base i/o in eeprom has been changed but the */
872 /* registers had not been changed, a reload of the eeprom */
873 /* would move the adapter to the address stored in eeprom */
874
875 /* TODO: Code to implement. */
876
877 /* Until here it was code from HWdiscover procedure. */
878 /* Next comes code from mmuinit procedure of SCO BM driver which is
879 * called from HWconfigure in the SCO driver. */
880
881 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
882 * multicast filter...
883 */
884 hp100_mmuinit(dev);
885
886 /* We don't turn the interrupts on here - this is done by start_interface. */
887 wait(); /* TODO: Do we really need this? */
888
889 /* Enable Hardware (e.g. unreset) */
890 hp100_cascade_reset(dev, 0);
891
892 /* ------- initialisation complete ----------- */
893
894 /* Finally try to log in the Hub if there may be a VG connection. */
895 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
896 hp100_login_to_vg_hub(dev, 0); /* relogin */
897
898 }
899
900
901 /*
902 * mmuinit - Reinitialise Cascade MMU and MAC settings.
903 * Note: Must already be in reset and leaves card in reset.
904 */
905 static void hp100_mmuinit(struct net_device *dev)
906 {
907 int ioaddr = dev->base_addr;
908 struct hp100_private *lp = netdev_priv(dev);
909 int i;
910
911 #ifdef HP100_DEBUG_B
912 hp100_outw(0x4203, TRACE);
913 printk("hp100: %s: mmuinit\n", dev->name);
914 #endif
915
916 #ifdef HP100_DEBUG
917 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
918 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
919 return;
920 }
921 #endif
922
923 /* Make sure IRQs are masked off and ack'ed. */
924 hp100_page(PERFORMANCE);
925 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
926 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
927
928 /*
929 * Enable Hardware
930 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
931 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
932 * - Clear Priority, Advance Pkt and Xmit Cmd
933 */
934
935 hp100_outw(HP100_DEBUG_EN |
936 HP100_RX_HDR |
937 HP100_EE_EN | HP100_RESET_HB |
938 HP100_IO_EN |
939 HP100_FAKE_INT |
940 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
941
942 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
943
944 if (lp->mode == 1) { /* busmaster */
945 hp100_outw(HP100_BM_WRITE |
946 HP100_BM_READ |
947 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
948 } else if (lp->mode == 2) { /* memory mapped */
949 hp100_outw(HP100_BM_WRITE |
950 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
951 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
952 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
953 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
954 } else if (lp->mode == 3) { /* i/o mapped mode */
955 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
956 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
957 }
958
959 hp100_page(HW_MAP);
960 hp100_outb(0, EARLYRXCFG);
961 hp100_outw(0, EARLYTXCFG);
962
963 /*
964 * Enable Bus Master mode
965 */
966 if (lp->mode == 1) { /* busmaster */
967 /* Experimental: Set some PCI configuration bits */
968 hp100_page(HW_MAP);
969 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
970 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
971
972 /* PCI Bus failures should result in a Misc. Interrupt */
973 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
974
975 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
976 hp100_page(HW_MAP);
977 /* Use Burst Mode and switch on PAGE_CK */
978 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
979 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
980 hp100_orb(HP100_BM_PAGE_CK, BM);
981 hp100_orb(HP100_BM_MASTER, BM);
982 } else { /* not busmaster */
983
984 hp100_page(HW_MAP);
985 hp100_andb(~HP100_BM_MASTER, BM);
986 }
987
988 /*
989 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
990 */
991 hp100_page(MMU_CFG);
992 if (lp->mode == 1) { /* only needed for Busmaster */
993 int xmit_stop, recv_stop;
994
995 if ((lp->chip == HP100_CHIPID_RAINIER) ||
996 (lp->chip == HP100_CHIPID_SHASTA)) {
997 int pdl_stop;
998
999 /*
1000 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
1001 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
1002 * to the next higher 1k boundary) bytes for the rx-pdl's
1003 * Note: For non-etr chips the transmit stop register must be
1004 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
1005 */
1006 pdl_stop = lp->memory_size;
1007 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
1008 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
1009 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
1010 #ifdef HP100_DEBUG_BM
1011 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
1012 #endif
1013 } else {
1014 /* ETR chip (Lassen) in busmaster mode */
1015 xmit_stop = (lp->memory_size) - 1;
1016 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1017 }
1018
1019 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1020 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1021 #ifdef HP100_DEBUG_BM
1022 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1023 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1024 #endif
1025 } else {
1026 /* Slave modes (memory mapped and programmed io) */
1027 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1028 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1029 #ifdef HP100_DEBUG
1030 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1031 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1032 #endif
1033 }
1034
1035 /* Write MAC address into page 1 */
1036 hp100_page(MAC_ADDRESS);
1037 for (i = 0; i < 6; i++)
1038 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1039
1040 /* Zero the multicast hash registers */
1041 for (i = 0; i < 8; i++)
1042 hp100_outb(0x0, HASH_BYTE0 + i);
1043
1044 /* Set up MAC defaults */
1045 hp100_page(MAC_CTRL);
1046
1047 /* Go to LAN Page and zero all filter bits */
1048 /* Zero accept error, accept multicast, accept broadcast and accept */
1049 /* all directed packet bits */
1050 hp100_andb(~(HP100_RX_EN |
1051 HP100_TX_EN |
1052 HP100_ACC_ERRORED |
1053 HP100_ACC_MC |
1054 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1055
1056 hp100_outb(0x00, MAC_CFG_2);
1057
1058 /* Zero the frame format bit. This works around a training bug in the */
1059 /* new hubs. */
1060 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1061
1062 if (lp->priority_tx)
1063 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1064 else
1065 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1066
1067 hp100_outb(HP100_ADV_NXT_PKT |
1068 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1069
1070 /* If busmaster, initialize the PDLs */
1071 if (lp->mode == 1)
1072 hp100_init_pdls(dev);
1073
1074 /* Go to performance page and initalize isr and imr registers */
1075 hp100_page(PERFORMANCE);
1076 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1077 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1078 }
1079
1080 /*
1081 * open/close functions
1082 */
1083
1084 static int hp100_open(struct net_device *dev)
1085 {
1086 struct hp100_private *lp = netdev_priv(dev);
1087 #ifdef HP100_DEBUG_B
1088 int ioaddr = dev->base_addr;
1089 #endif
1090
1091 #ifdef HP100_DEBUG_B
1092 hp100_outw(0x4204, TRACE);
1093 printk("hp100: %s: open\n", dev->name);
1094 #endif
1095
1096 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1097 if (request_irq(dev->irq, hp100_interrupt,
1098 lp->bus == HP100_BUS_PCI || lp->bus ==
1099 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1100 "hp100", dev)) {
1101 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1102 return -EAGAIN;
1103 }
1104
1105 dev->trans_start = jiffies; /* prevent tx timeout */
1106 netif_start_queue(dev);
1107
1108 lp->lan_type = hp100_sense_lan(dev);
1109 lp->mac1_mode = HP100_MAC1MODE3;
1110 lp->mac2_mode = HP100_MAC2MODE3;
1111 memset(&lp->hash_bytes, 0x00, 8);
1112
1113 hp100_stop_interface(dev);
1114
1115 hp100_hwinit(dev);
1116
1117 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1118
1119 return 0;
1120 }
1121
1122 /* The close function is called when the interface is to be brought down */
1123 static int hp100_close(struct net_device *dev)
1124 {
1125 int ioaddr = dev->base_addr;
1126 struct hp100_private *lp = netdev_priv(dev);
1127
1128 #ifdef HP100_DEBUG_B
1129 hp100_outw(0x4205, TRACE);
1130 printk("hp100: %s: close\n", dev->name);
1131 #endif
1132
1133 hp100_page(PERFORMANCE);
1134 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1135
1136 hp100_stop_interface(dev);
1137
1138 if (lp->lan_type == HP100_LAN_100)
1139 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1140
1141 netif_stop_queue(dev);
1142
1143 free_irq(dev->irq, dev);
1144
1145 #ifdef HP100_DEBUG
1146 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1147 hp100_inw(OPTION_LSW));
1148 #endif
1149
1150 return 0;
1151 }
1152
1153
1154 /*
1155 * Configure the PDL Rx rings and LAN
1156 */
1157 static void hp100_init_pdls(struct net_device *dev)
1158 {
1159 struct hp100_private *lp = netdev_priv(dev);
1160 hp100_ring_t *ringptr;
1161 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1162 int i;
1163
1164 #ifdef HP100_DEBUG_B
1165 int ioaddr = dev->base_addr;
1166 #endif
1167
1168 #ifdef HP100_DEBUG_B
1169 hp100_outw(0x4206, TRACE);
1170 printk("hp100: %s: init pdls\n", dev->name);
1171 #endif
1172
1173 if (!lp->page_vaddr_algn)
1174 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1175 else {
1176 /* pageptr shall point into the DMA accessible memory region */
1177 /* we use this pointer to status the upper limit of allocated */
1178 /* memory in the allocated page. */
1179 /* note: align the pointers to the pci cache line size */
1180 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1181 pageptr = lp->page_vaddr_algn;
1182
1183 lp->rxrcommit = 0;
1184 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1185
1186 /* Initialise Rx Ring */
1187 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1188 lp->rxring[i].next = ringptr;
1189 ringptr = &(lp->rxring[i]);
1190 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1191 }
1192
1193 /* Initialise Tx Ring */
1194 lp->txrcommit = 0;
1195 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1196 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1197 lp->txring[i].next = ringptr;
1198 ringptr = &(lp->txring[i]);
1199 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1200 }
1201 }
1202 }
1203
1204
1205 /* These functions "format" the entries in the pdl structure */
1206 /* They return how much memory the fragments need. */
1207 static int hp100_init_rxpdl(struct net_device *dev,
1208 register hp100_ring_t * ringptr,
1209 register u32 * pdlptr)
1210 {
1211 /* pdlptr is starting address for this pdl */
1212
1213 if (0 != (((unsigned long) pdlptr) & 0xf))
1214 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1215 dev->name, (unsigned long) pdlptr);
1216
1217 ringptr->pdl = pdlptr + 1;
1218 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1219 ringptr->skb = (void *) NULL;
1220
1221 /*
1222 * Write address and length of first PDL Fragment (which is used for
1223 * storing the RX-Header
1224 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1225 * store this information. (PDH is at offset 0x04)
1226 */
1227 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1228
1229 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1230 *(pdlptr + 3) = 4; /* Length Frag 1 */
1231
1232 return roundup(MAX_RX_FRAG * 2 + 2, 4);
1233 }
1234
1235
1236 static int hp100_init_txpdl(struct net_device *dev,
1237 register hp100_ring_t * ringptr,
1238 register u32 * pdlptr)
1239 {
1240 if (0 != (((unsigned long) pdlptr) & 0xf))
1241 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1242
1243 ringptr->pdl = pdlptr; /* +1; */
1244 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1245 ringptr->skb = (void *) NULL;
1246
1247 return roundup(MAX_TX_FRAG * 2 + 2, 4);
1248 }
1249
1250 /*
1251 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1252 * for possible odd word alignment rounding up to next dword and set PDL
1253 * address for fragment#2
1254 * Returns: 0 if unable to allocate skb_buff
1255 * 1 if successful
1256 */
1257 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1258 struct net_device *dev)
1259 {
1260 #ifdef HP100_DEBUG_B
1261 int ioaddr = dev->base_addr;
1262 #endif
1263 #ifdef HP100_DEBUG_BM
1264 u_int *p;
1265 #endif
1266
1267 #ifdef HP100_DEBUG_B
1268 hp100_outw(0x4207, TRACE);
1269 printk("hp100: %s: build rx pdl\n", dev->name);
1270 #endif
1271
1272 /* Allocate skb buffer of maximum size */
1273 /* Note: This depends on the alloc_skb functions allocating more
1274 * space than requested, i.e. aligning to 16bytes */
1275
1276 ringptr->skb = dev_alloc_skb(roundup(MAX_ETHER_SIZE + 2, 4));
1277
1278 if (NULL != ringptr->skb) {
1279 /*
1280 * Reserve 2 bytes at the head of the buffer to land the IP header
1281 * on a long word boundary (According to the Network Driver section
1282 * in the Linux KHG, this should help to increase performance.)
1283 */
1284 skb_reserve(ringptr->skb, 2);
1285
1286 ringptr->skb->dev = dev;
1287 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1288
1289 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1290 /* Note: 1st Fragment is used for the 4 byte packet status
1291 * (receive header). Its PDL entries are set up by init_rxpdl. So
1292 * here we only have to set up the PDL fragment entries for the data
1293 * part. Those 4 bytes will be stored in the DMA memory region
1294 * directly before the PDL.
1295 */
1296 #ifdef HP100_DEBUG_BM
1297 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1298 dev->name, (u_int) ringptr->pdl,
1299 roundup(MAX_ETHER_SIZE + 2, 4),
1300 (unsigned int) ringptr->skb->data);
1301 #endif
1302
1303 /* Conversion to new PCI API : map skbuf data to PCI bus.
1304 * Doc says it's OK for EISA as well - Jean II */
1305 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1306 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1307 ringptr->skb->data);
1308 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1309
1310 #ifdef HP100_DEBUG_BM
1311 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1312 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1313 #endif
1314 return (1);
1315 }
1316 /* else: */
1317 /* alloc_skb failed (no memory) -> still can receive the header
1318 * fragment into PDL memory. make PDL safe by clearing msgptr and
1319 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1320 */
1321 #ifdef HP100_DEBUG_BM
1322 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1323 #endif
1324
1325 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1326
1327 return (0);
1328 }
1329
1330 /*
1331 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1332 *
1333 * Makes assumption that skb's are always contiguous memory areas and
1334 * therefore PDLs contain only 2 physical fragments.
1335 * - While the number of Rx PDLs with buffers is less than maximum
1336 * a. Get a maximum packet size skb
1337 * b. Put the physical address of the buffer into the PDL.
1338 * c. Output physical address of PDL to adapter.
1339 */
1340 static void hp100_rxfill(struct net_device *dev)
1341 {
1342 int ioaddr = dev->base_addr;
1343
1344 struct hp100_private *lp = netdev_priv(dev);
1345 hp100_ring_t *ringptr;
1346
1347 #ifdef HP100_DEBUG_B
1348 hp100_outw(0x4208, TRACE);
1349 printk("hp100: %s: rxfill\n", dev->name);
1350 #endif
1351
1352 hp100_page(PERFORMANCE);
1353
1354 while (lp->rxrcommit < MAX_RX_PDL) {
1355 /*
1356 ** Attempt to get a buffer and build a Rx PDL.
1357 */
1358 ringptr = lp->rxrtail;
1359 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1360 return; /* None available, return */
1361 }
1362
1363 /* Hand this PDL over to the card */
1364 /* Note: This needs performance page selected! */
1365 #ifdef HP100_DEBUG_BM
1366 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1367 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1368 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1369 #endif
1370
1371 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1372
1373 lp->rxrcommit += 1;
1374 lp->rxrtail = ringptr->next;
1375 }
1376 }
1377
1378 /*
1379 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1380 */
1381
1382 static void hp100_BM_shutdown(struct net_device *dev)
1383 {
1384 int ioaddr = dev->base_addr;
1385 struct hp100_private *lp = netdev_priv(dev);
1386 unsigned long time;
1387
1388 #ifdef HP100_DEBUG_B
1389 hp100_outw(0x4209, TRACE);
1390 printk("hp100: %s: bm shutdown\n", dev->name);
1391 #endif
1392
1393 hp100_page(PERFORMANCE);
1394 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1395 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1396
1397 /* Ensure Interrupts are off */
1398 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1399
1400 /* Disable all MAC activity */
1401 hp100_page(MAC_CTRL);
1402 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1403
1404 /* If cascade MMU is not already in reset */
1405 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1406 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1407 * MMU pointers will not be reset out from underneath
1408 */
1409 hp100_page(MAC_CTRL);
1410 for (time = 0; time < 5000; time++) {
1411 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1412 break;
1413 }
1414
1415 /* Shutdown algorithm depends on the generation of Cascade */
1416 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1417 /* Disable Busmaster mode and wait for bit to go to zero. */
1418 hp100_page(HW_MAP);
1419 hp100_andb(~HP100_BM_MASTER, BM);
1420 /* 100 ms timeout */
1421 for (time = 0; time < 32000; time++) {
1422 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1423 break;
1424 }
1425 } else { /* Shasta or Rainier Shutdown/Reset */
1426 /* To ensure all bus master inloading activity has ceased,
1427 * wait for no Rx PDAs or no Rx packets on card.
1428 */
1429 hp100_page(PERFORMANCE);
1430 /* 100 ms timeout */
1431 for (time = 0; time < 10000; time++) {
1432 /* RX_PDL: PDLs not executed. */
1433 /* RX_PKT_CNT: RX'd packets on card. */
1434 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1435 break;
1436 }
1437
1438 if (time >= 10000)
1439 printk("hp100: %s: BM shutdown error.\n", dev->name);
1440
1441 /* To ensure all bus master outloading activity has ceased,
1442 * wait until the Tx PDA count goes to zero or no more Tx space
1443 * available in the Tx region of the card.
1444 */
1445 /* 100 ms timeout */
1446 for (time = 0; time < 10000; time++) {
1447 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1448 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1449 break;
1450 }
1451
1452 /* Disable Busmaster mode */
1453 hp100_page(HW_MAP);
1454 hp100_andb(~HP100_BM_MASTER, BM);
1455 } /* end of shutdown procedure for non-etr parts */
1456
1457 hp100_cascade_reset(dev, 1);
1458 }
1459 hp100_page(PERFORMANCE);
1460 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1461 /* Busmaster mode should be shut down now. */
1462 }
1463
1464 static int hp100_check_lan(struct net_device *dev)
1465 {
1466 struct hp100_private *lp = netdev_priv(dev);
1467
1468 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1469 hp100_stop_interface(dev);
1470 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1471 printk("hp100: %s: no connection found - check wire\n", dev->name);
1472 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1473 return -EIO;
1474 }
1475 if (lp->lan_type == HP100_LAN_100)
1476 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1477 hp100_start_interface(dev);
1478 }
1479 return 0;
1480 }
1481
1482 /*
1483 * transmit functions
1484 */
1485
1486 /* tx function for busmaster mode */
1487 static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
1488 struct net_device *dev)
1489 {
1490 unsigned long flags;
1491 int i, ok_flag;
1492 int ioaddr = dev->base_addr;
1493 struct hp100_private *lp = netdev_priv(dev);
1494 hp100_ring_t *ringptr;
1495
1496 #ifdef HP100_DEBUG_B
1497 hp100_outw(0x4210, TRACE);
1498 printk("hp100: %s: start_xmit_bm\n", dev->name);
1499 #endif
1500 if (skb->len <= 0)
1501 goto drop;
1502
1503 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1504 return NETDEV_TX_OK;
1505
1506 /* Get Tx ring tail pointer */
1507 if (lp->txrtail->next == lp->txrhead) {
1508 /* No memory. */
1509 #ifdef HP100_DEBUG
1510 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1511 #endif
1512 /* not waited long enough since last tx? */
1513 if (time_before(jiffies, dev_trans_start(dev) + HZ))
1514 goto drop;
1515
1516 if (hp100_check_lan(dev))
1517 goto drop;
1518
1519 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1520 /* we have a 100Mb/s adapter but it isn't connected to hub */
1521 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1522 hp100_stop_interface(dev);
1523 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1524 hp100_start_interface(dev);
1525 } else {
1526 spin_lock_irqsave(&lp->lock, flags);
1527 hp100_ints_off(); /* Useful ? Jean II */
1528 i = hp100_sense_lan(dev);
1529 hp100_ints_on();
1530 spin_unlock_irqrestore(&lp->lock, flags);
1531 if (i == HP100_LAN_ERR)
1532 printk("hp100: %s: link down detected\n", dev->name);
1533 else if (lp->lan_type != i) { /* cable change! */
1534 /* it's very hard - all network settings must be changed!!! */
1535 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1536 lp->lan_type = i;
1537 hp100_stop_interface(dev);
1538 if (lp->lan_type == HP100_LAN_100)
1539 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1540 hp100_start_interface(dev);
1541 } else {
1542 printk("hp100: %s: interface reset\n", dev->name);
1543 hp100_stop_interface(dev);
1544 if (lp->lan_type == HP100_LAN_100)
1545 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1546 hp100_start_interface(dev);
1547 }
1548 }
1549
1550 goto drop;
1551 }
1552
1553 /*
1554 * we have to turn int's off before modifying this, otherwise
1555 * a tx_pdl_cleanup could occur at the same time
1556 */
1557 spin_lock_irqsave(&lp->lock, flags);
1558 ringptr = lp->txrtail;
1559 lp->txrtail = ringptr->next;
1560
1561 /* Check whether packet has minimal packet size */
1562 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1563 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1564
1565 ringptr->skb = skb;
1566 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1567 if (lp->chip == HP100_CHIPID_SHASTA) {
1568 /* TODO:Could someone who has the EISA card please check if this works? */
1569 ringptr->pdl[2] = i;
1570 } else { /* Lassen */
1571 /* In the PDL, don't use the padded size but the real packet size: */
1572 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1573 }
1574 /* Conversion to new PCI API : map skbuf data to PCI bus.
1575 * Doc says it's OK for EISA as well - Jean II */
1576 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1577
1578 /* Hand this PDL to the card. */
1579 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1580
1581 lp->txrcommit++;
1582 spin_unlock_irqrestore(&lp->lock, flags);
1583
1584 /* Update statistics */
1585 lp->stats.tx_packets++;
1586 lp->stats.tx_bytes += skb->len;
1587
1588 return NETDEV_TX_OK;
1589
1590 drop:
1591 dev_kfree_skb(skb);
1592 return NETDEV_TX_OK;
1593 }
1594
1595
1596 /* clean_txring checks if packets have been sent by the card by reading
1597 * the TX_PDL register from the performance page and comparing it to the
1598 * number of commited packets. It then frees the skb's of the packets that
1599 * obviously have been sent to the network.
1600 *
1601 * Needs the PERFORMANCE page selected.
1602 */
1603 static void hp100_clean_txring(struct net_device *dev)
1604 {
1605 struct hp100_private *lp = netdev_priv(dev);
1606 int ioaddr = dev->base_addr;
1607 int donecount;
1608
1609 #ifdef HP100_DEBUG_B
1610 hp100_outw(0x4211, TRACE);
1611 printk("hp100: %s: clean txring\n", dev->name);
1612 #endif
1613
1614 /* How many PDLs have been transmitted? */
1615 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1616
1617 #ifdef HP100_DEBUG
1618 if (donecount > MAX_TX_PDL)
1619 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1620 #endif
1621
1622 for (; 0 != donecount; donecount--) {
1623 #ifdef HP100_DEBUG_BM
1624 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1625 dev->name, (u_int) lp->txrhead->skb->data,
1626 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1627 #endif
1628 /* Conversion to new PCI API : NOP */
1629 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1630 dev_kfree_skb_any(lp->txrhead->skb);
1631 lp->txrhead->skb = (void *) NULL;
1632 lp->txrhead = lp->txrhead->next;
1633 lp->txrcommit--;
1634 }
1635 }
1636
1637 /* tx function for slave modes */
1638 static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
1639 struct net_device *dev)
1640 {
1641 unsigned long flags;
1642 int i, ok_flag;
1643 int ioaddr = dev->base_addr;
1644 u_short val;
1645 struct hp100_private *lp = netdev_priv(dev);
1646
1647 #ifdef HP100_DEBUG_B
1648 hp100_outw(0x4212, TRACE);
1649 printk("hp100: %s: start_xmit\n", dev->name);
1650 #endif
1651 if (skb->len <= 0)
1652 goto drop;
1653
1654 if (hp100_check_lan(dev))
1655 goto drop;
1656
1657 /* If there is not enough free memory on the card... */
1658 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1659 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1660 #ifdef HP100_DEBUG
1661 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1662 #endif
1663 /* not waited long enough since last failed tx try? */
1664 if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
1665 #ifdef HP100_DEBUG
1666 printk("hp100: %s: trans_start timing problem\n",
1667 dev->name);
1668 #endif
1669 goto drop;
1670 }
1671 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1672 /* we have a 100Mb/s adapter but it isn't connected to hub */
1673 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1674 hp100_stop_interface(dev);
1675 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1676 hp100_start_interface(dev);
1677 } else {
1678 spin_lock_irqsave(&lp->lock, flags);
1679 hp100_ints_off(); /* Useful ? Jean II */
1680 i = hp100_sense_lan(dev);
1681 hp100_ints_on();
1682 spin_unlock_irqrestore(&lp->lock, flags);
1683 if (i == HP100_LAN_ERR)
1684 printk("hp100: %s: link down detected\n", dev->name);
1685 else if (lp->lan_type != i) { /* cable change! */
1686 /* it's very hard - all network setting must be changed!!! */
1687 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1688 lp->lan_type = i;
1689 hp100_stop_interface(dev);
1690 if (lp->lan_type == HP100_LAN_100)
1691 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1692 hp100_start_interface(dev);
1693 } else {
1694 printk("hp100: %s: interface reset\n", dev->name);
1695 hp100_stop_interface(dev);
1696 if (lp->lan_type == HP100_LAN_100)
1697 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1698 hp100_start_interface(dev);
1699 mdelay(1);
1700 }
1701 }
1702 goto drop;
1703 }
1704
1705 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1706 #ifdef HP100_DEBUG_TX
1707 printk("hp100: %s: start_xmit: busy\n", dev->name);
1708 #endif
1709 }
1710
1711 spin_lock_irqsave(&lp->lock, flags);
1712 hp100_ints_off();
1713 val = hp100_inw(IRQ_STATUS);
1714 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1715 * when the current packet being transmitted on the wire is completed. */
1716 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1717 #ifdef HP100_DEBUG_TX
1718 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1719 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1720 #endif
1721
1722 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1723 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1724
1725 hp100_outw(i, DATA32); /* tell card the total packet length */
1726 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1727
1728 if (lp->mode == 2) { /* memory mapped */
1729 /* Note: The J2585B needs alignment to 32bits here! */
1730 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1731 if (!ok_flag)
1732 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1733 } else { /* programmed i/o */
1734 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1735 (skb->len + 3) >> 2);
1736 if (!ok_flag)
1737 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1738 hp100_outl(0, DATA32);
1739 }
1740
1741 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1742
1743 lp->stats.tx_packets++;
1744 lp->stats.tx_bytes += skb->len;
1745 hp100_ints_on();
1746 spin_unlock_irqrestore(&lp->lock, flags);
1747
1748 dev_kfree_skb_any(skb);
1749
1750 #ifdef HP100_DEBUG_TX
1751 printk("hp100: %s: start_xmit: end\n", dev->name);
1752 #endif
1753
1754 return NETDEV_TX_OK;
1755
1756 drop:
1757 dev_kfree_skb(skb);
1758 return NETDEV_TX_OK;
1759
1760 }
1761
1762
1763 /*
1764 * Receive Function (Non-Busmaster mode)
1765 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1766 * packet counter is non-zero.
1767 * For non-busmaster, this function does the whole work of transfering
1768 * the packet to the host memory and then up to higher layers via skb
1769 * and netif_rx.
1770 */
1771
1772 static void hp100_rx(struct net_device *dev)
1773 {
1774 int packets, pkt_len;
1775 int ioaddr = dev->base_addr;
1776 struct hp100_private *lp = netdev_priv(dev);
1777 u_int header;
1778 struct sk_buff *skb;
1779
1780 #ifdef DEBUG_B
1781 hp100_outw(0x4213, TRACE);
1782 printk("hp100: %s: rx\n", dev->name);
1783 #endif
1784
1785 /* First get indication of received lan packet */
1786 /* RX_PKT_CND indicates the number of packets which have been fully */
1787 /* received onto the card but have not been fully transferred of the card */
1788 packets = hp100_inb(RX_PKT_CNT);
1789 #ifdef HP100_DEBUG_RX
1790 if (packets > 1)
1791 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1792 #endif
1793
1794 while (packets-- > 0) {
1795 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1796 /* really advanced to the next packet. */
1797 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1798 #ifdef HP100_DEBUG_RX
1799 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1800 #endif
1801 }
1802
1803 /* First we get the header, which contains information about the */
1804 /* actual length of the received packet. */
1805 if (lp->mode == 2) { /* memory mapped mode */
1806 header = readl(lp->mem_ptr_virt);
1807 } else /* programmed i/o */
1808 header = hp100_inl(DATA32);
1809
1810 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1811
1812 #ifdef HP100_DEBUG_RX
1813 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1814 dev->name, header & HP100_PKT_LEN_MASK,
1815 (header >> 16) & 0xfff8, (header >> 16) & 7);
1816 #endif
1817
1818 /* Now we allocate the skb and transfer the data into it. */
1819 skb = dev_alloc_skb(pkt_len+2);
1820 if (skb == NULL) { /* Not enough memory->drop packet */
1821 #ifdef HP100_DEBUG
1822 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1823 dev->name, pkt_len);
1824 #endif
1825 lp->stats.rx_dropped++;
1826 } else { /* skb successfully allocated */
1827
1828 u_char *ptr;
1829
1830 skb_reserve(skb,2);
1831
1832 /* ptr to start of the sk_buff data area */
1833 skb_put(skb, pkt_len);
1834 ptr = skb->data;
1835
1836 /* Now transfer the data from the card into that area */
1837 if (lp->mode == 2)
1838 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1839 else /* io mapped */
1840 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1841
1842 skb->protocol = eth_type_trans(skb, dev);
1843
1844 #ifdef HP100_DEBUG_RX
1845 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1846 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1847 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1848 ptr[9], ptr[10], ptr[11]);
1849 #endif
1850 netif_rx(skb);
1851 lp->stats.rx_packets++;
1852 lp->stats.rx_bytes += pkt_len;
1853 }
1854
1855 /* Indicate the card that we have got the packet */
1856 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1857
1858 switch (header & 0x00070000) {
1859 case (HP100_MULTI_ADDR_HASH << 16):
1860 case (HP100_MULTI_ADDR_NO_HASH << 16):
1861 lp->stats.multicast++;
1862 break;
1863 }
1864 } /* end of while(there are packets) loop */
1865 #ifdef HP100_DEBUG_RX
1866 printk("hp100_rx: %s: end\n", dev->name);
1867 #endif
1868 }
1869
1870 /*
1871 * Receive Function for Busmaster Mode
1872 */
1873 static void hp100_rx_bm(struct net_device *dev)
1874 {
1875 int ioaddr = dev->base_addr;
1876 struct hp100_private *lp = netdev_priv(dev);
1877 hp100_ring_t *ptr;
1878 u_int header;
1879 int pkt_len;
1880
1881 #ifdef HP100_DEBUG_B
1882 hp100_outw(0x4214, TRACE);
1883 printk("hp100: %s: rx_bm\n", dev->name);
1884 #endif
1885
1886 #ifdef HP100_DEBUG
1887 if (0 == lp->rxrcommit) {
1888 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1889 return;
1890 } else
1891 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1892 * the cards BM engine */
1893 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1894 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1895 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1896 lp->rxrcommit);
1897 return;
1898 }
1899 #endif
1900
1901 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1902 /*
1903 * The packet was received into the pdl pointed to by lp->rxrhead (
1904 * the oldest pdl in the ring
1905 */
1906
1907 /* First we get the header, which contains information about the */
1908 /* actual length of the received packet. */
1909
1910 ptr = lp->rxrhead;
1911
1912 header = *(ptr->pdl - 1);
1913 pkt_len = (header & HP100_PKT_LEN_MASK);
1914
1915 /* Conversion to new PCI API : NOP */
1916 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1917
1918 #ifdef HP100_DEBUG_BM
1919 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1920 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1921 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1922 printk("hp100: %s: RX_PDL_COUNT:0x%x TX_PDL_COUNT:0x%x, RX_PKT_CNT=0x%x PDH=0x%x, Data@0x%x len=0x%x\n",
1923 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1924 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1925 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1926 #endif
1927
1928 if ((pkt_len >= MIN_ETHER_SIZE) &&
1929 (pkt_len <= MAX_ETHER_SIZE)) {
1930 if (ptr->skb == NULL) {
1931 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1932 /* can happen if we only allocated room for the pdh due to memory shortage. */
1933 lp->stats.rx_dropped++;
1934 } else {
1935 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1936 ptr->skb->protocol =
1937 eth_type_trans(ptr->skb, dev);
1938
1939 netif_rx(ptr->skb); /* Up and away... */
1940
1941 lp->stats.rx_packets++;
1942 lp->stats.rx_bytes += pkt_len;
1943 }
1944
1945 switch (header & 0x00070000) {
1946 case (HP100_MULTI_ADDR_HASH << 16):
1947 case (HP100_MULTI_ADDR_NO_HASH << 16):
1948 lp->stats.multicast++;
1949 break;
1950 }
1951 } else {
1952 #ifdef HP100_DEBUG
1953 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1954 #endif
1955 if (ptr->skb != NULL)
1956 dev_kfree_skb_any(ptr->skb);
1957 lp->stats.rx_errors++;
1958 }
1959
1960 lp->rxrhead = lp->rxrhead->next;
1961
1962 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1963 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1964 /* No space for skb, header can still be received. */
1965 #ifdef HP100_DEBUG
1966 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1967 #endif
1968 return;
1969 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1970 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1971 lp->rxrtail = lp->rxrtail->next;
1972 }
1973
1974 }
1975 }
1976
1977 /*
1978 * statistics
1979 */
1980 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1981 {
1982 unsigned long flags;
1983 int ioaddr = dev->base_addr;
1984 struct hp100_private *lp = netdev_priv(dev);
1985
1986 #ifdef HP100_DEBUG_B
1987 hp100_outw(0x4215, TRACE);
1988 #endif
1989
1990 spin_lock_irqsave(&lp->lock, flags);
1991 hp100_ints_off(); /* Useful ? Jean II */
1992 hp100_update_stats(dev);
1993 hp100_ints_on();
1994 spin_unlock_irqrestore(&lp->lock, flags);
1995 return &(lp->stats);
1996 }
1997
1998 static void hp100_update_stats(struct net_device *dev)
1999 {
2000 int ioaddr = dev->base_addr;
2001 u_short val;
2002 struct hp100_private *lp = netdev_priv(dev);
2003
2004 #ifdef HP100_DEBUG_B
2005 hp100_outw(0x4216, TRACE);
2006 printk("hp100: %s: update-stats\n", dev->name);
2007 #endif
2008
2009 /* Note: Statistics counters clear when read. */
2010 hp100_page(MAC_CTRL);
2011 val = hp100_inw(DROPPED) & 0x0fff;
2012 lp->stats.rx_errors += val;
2013 lp->stats.rx_over_errors += val;
2014 val = hp100_inb(CRC);
2015 lp->stats.rx_errors += val;
2016 lp->stats.rx_crc_errors += val;
2017 val = hp100_inb(ABORT);
2018 lp->stats.tx_errors += val;
2019 lp->stats.tx_aborted_errors += val;
2020 hp100_page(PERFORMANCE);
2021 }
2022
2023 static void hp100_misc_interrupt(struct net_device *dev)
2024 {
2025 #ifdef HP100_DEBUG_B
2026 int ioaddr = dev->base_addr;
2027 #endif
2028 struct hp100_private *lp = netdev_priv(dev);
2029
2030 #ifdef HP100_DEBUG_B
2031 int ioaddr = dev->base_addr;
2032 hp100_outw(0x4216, TRACE);
2033 printk("hp100: %s: misc_interrupt\n", dev->name);
2034 #endif
2035
2036 /* Note: Statistics counters clear when read. */
2037 lp->stats.rx_errors++;
2038 lp->stats.tx_errors++;
2039 }
2040
2041 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2042 {
2043 unsigned long flags;
2044
2045 #ifdef HP100_DEBUG_B
2046 hp100_outw(0x4217, TRACE);
2047 printk("hp100: %s: clear_stats\n", dev->name);
2048 #endif
2049
2050 spin_lock_irqsave(&lp->lock, flags);
2051 hp100_page(MAC_CTRL); /* get all statistics bytes */
2052 hp100_inw(DROPPED);
2053 hp100_inb(CRC);
2054 hp100_inb(ABORT);
2055 hp100_page(PERFORMANCE);
2056 spin_unlock_irqrestore(&lp->lock, flags);
2057 }
2058
2059
2060 /*
2061 * multicast setup
2062 */
2063
2064 /*
2065 * Set or clear the multicast filter for this adapter.
2066 */
2067
2068 static void hp100_set_multicast_list(struct net_device *dev)
2069 {
2070 unsigned long flags;
2071 int ioaddr = dev->base_addr;
2072 struct hp100_private *lp = netdev_priv(dev);
2073
2074 #ifdef HP100_DEBUG_B
2075 hp100_outw(0x4218, TRACE);
2076 printk("hp100: %s: set_mc_list\n", dev->name);
2077 #endif
2078
2079 spin_lock_irqsave(&lp->lock, flags);
2080 hp100_ints_off();
2081 hp100_page(MAC_CTRL);
2082 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2083
2084 if (dev->flags & IFF_PROMISC) {
2085 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2086 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2087 memset(&lp->hash_bytes, 0xff, 8);
2088 } else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) {
2089 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2090 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2091 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2092 if (dev->flags & IFF_ALLMULTI) {
2093 /* set hash filter to receive all multicast packets */
2094 memset(&lp->hash_bytes, 0xff, 8);
2095 } else {
2096 int i, idx;
2097 u_char *addrs;
2098 struct netdev_hw_addr *ha;
2099
2100 memset(&lp->hash_bytes, 0x00, 8);
2101 #ifdef HP100_DEBUG
2102 printk("hp100: %s: computing hash filter - mc_count = %i\n",
2103 dev->name, netdev_mc_count(dev));
2104 #endif
2105 netdev_for_each_mc_addr(ha, dev) {
2106 addrs = ha->addr;
2107 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2108 #ifdef HP100_DEBUG
2109 printk("hp100: %s: multicast = %pM, ",
2110 dev->name, addrs);
2111 #endif
2112 for (i = idx = 0; i < 6; i++) {
2113 idx ^= *addrs++ & 0x3f;
2114 printk(":%02x:", idx);
2115 }
2116 #ifdef HP100_DEBUG
2117 printk("idx = %i\n", idx);
2118 #endif
2119 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2120 }
2121 }
2122 }
2123 #else
2124 memset(&lp->hash_bytes, 0xff, 8);
2125 #endif
2126 } else {
2127 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2128 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2129 memset(&lp->hash_bytes, 0x00, 8);
2130 }
2131
2132 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2133 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2134 int i;
2135
2136 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2137 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2138 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2139
2140 hp100_page(MAC_ADDRESS);
2141 for (i = 0; i < 8; i++)
2142 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2143 #ifdef HP100_DEBUG
2144 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2145 dev->name, lp->mac1_mode, lp->mac2_mode,
2146 lp->hash_bytes[0], lp->hash_bytes[1],
2147 lp->hash_bytes[2], lp->hash_bytes[3],
2148 lp->hash_bytes[4], lp->hash_bytes[5],
2149 lp->hash_bytes[6], lp->hash_bytes[7]);
2150 #endif
2151
2152 if (lp->lan_type == HP100_LAN_100) {
2153 #ifdef HP100_DEBUG
2154 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2155 #endif
2156 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2157 }
2158 } else {
2159 int i;
2160 u_char old_hash_bytes[8];
2161
2162 hp100_page(MAC_ADDRESS);
2163 for (i = 0; i < 8; i++)
2164 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2165 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2166 for (i = 0; i < 8; i++)
2167 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2168 #ifdef HP100_DEBUG
2169 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2170 dev->name, lp->hash_bytes[0],
2171 lp->hash_bytes[1], lp->hash_bytes[2],
2172 lp->hash_bytes[3], lp->hash_bytes[4],
2173 lp->hash_bytes[5], lp->hash_bytes[6],
2174 lp->hash_bytes[7]);
2175 #endif
2176
2177 if (lp->lan_type == HP100_LAN_100) {
2178 #ifdef HP100_DEBUG
2179 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2180 #endif
2181 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2182 }
2183 }
2184 }
2185
2186 hp100_page(MAC_CTRL);
2187 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2188 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2189
2190 hp100_page(PERFORMANCE);
2191 hp100_ints_on();
2192 spin_unlock_irqrestore(&lp->lock, flags);
2193 }
2194
2195 /*
2196 * hardware interrupt handling
2197 */
2198
2199 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2200 {
2201 struct net_device *dev = (struct net_device *) dev_id;
2202 struct hp100_private *lp = netdev_priv(dev);
2203
2204 int ioaddr;
2205 u_int val;
2206
2207 if (dev == NULL)
2208 return IRQ_NONE;
2209 ioaddr = dev->base_addr;
2210
2211 spin_lock(&lp->lock);
2212
2213 hp100_ints_off();
2214
2215 #ifdef HP100_DEBUG_B
2216 hp100_outw(0x4219, TRACE);
2217 #endif
2218
2219 /* hp100_page( PERFORMANCE ); */
2220 val = hp100_inw(IRQ_STATUS);
2221 #ifdef HP100_DEBUG_IRQ
2222 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2223 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2224 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2225 #endif
2226
2227 if (val == 0) { /* might be a shared interrupt */
2228 spin_unlock(&lp->lock);
2229 hp100_ints_on();
2230 return IRQ_NONE;
2231 }
2232 /* We're only interested in those interrupts we really enabled. */
2233 /* val &= hp100_inw( IRQ_MASK ); */
2234
2235 /*
2236 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2237 * is considered executed whenever the RX_PDL data structure is no longer
2238 * needed.
2239 */
2240 if (val & HP100_RX_PDL_FILL_COMPL) {
2241 if (lp->mode == 1)
2242 hp100_rx_bm(dev);
2243 else {
2244 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2245 }
2246 }
2247
2248 /*
2249 * The RX_PACKET interrupt is set, when the receive packet counter is
2250 * non zero. We use this interrupt for receiving in slave mode. In
2251 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2252 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2253 * we somehow have missed a rx_pdl_fill_compl interrupt.
2254 */
2255
2256 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2257 if (lp->mode != 1) /* non busmaster */
2258 hp100_rx(dev);
2259 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2260 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2261 hp100_rx_bm(dev);
2262 }
2263 }
2264
2265 /*
2266 * Ack. that we have noticed the interrupt and thereby allow next one.
2267 * Note that this is now done after the slave rx function, since first
2268 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2269 * on the J2573.
2270 */
2271 hp100_outw(val, IRQ_STATUS);
2272
2273 /*
2274 * RX_ERROR is set when a packet is dropped due to no memory resources on
2275 * the card or when a RCV_ERR occurs.
2276 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2277 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2278 */
2279 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2280 #ifdef HP100_DEBUG_IRQ
2281 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2282 #endif
2283 hp100_update_stats(dev);
2284 if (lp->mode == 1) {
2285 hp100_rxfill(dev);
2286 hp100_clean_txring(dev);
2287 }
2288 }
2289
2290 /*
2291 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2292 */
2293 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2294 hp100_rxfill(dev);
2295
2296 /*
2297 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2298 * is completed
2299 */
2300 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2301 hp100_clean_txring(dev);
2302
2303 /*
2304 * MISC_ERROR is set when either the LAN link goes down or a detected
2305 * bus error occurs.
2306 */
2307 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2308 #ifdef HP100_DEBUG_IRQ
2309 printk
2310 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2311 dev->name);
2312 #endif
2313 if (lp->mode == 1) {
2314 hp100_clean_txring(dev);
2315 hp100_rxfill(dev);
2316 }
2317 hp100_misc_interrupt(dev);
2318 }
2319
2320 spin_unlock(&lp->lock);
2321 hp100_ints_on();
2322 return IRQ_HANDLED;
2323 }
2324
2325 /*
2326 * some misc functions
2327 */
2328
2329 static void hp100_start_interface(struct net_device *dev)
2330 {
2331 unsigned long flags;
2332 int ioaddr = dev->base_addr;
2333 struct hp100_private *lp = netdev_priv(dev);
2334
2335 #ifdef HP100_DEBUG_B
2336 hp100_outw(0x4220, TRACE);
2337 printk("hp100: %s: hp100_start_interface\n", dev->name);
2338 #endif
2339
2340 spin_lock_irqsave(&lp->lock, flags);
2341
2342 /* Ensure the adapter does not want to request an interrupt when */
2343 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2344 hp100_page(PERFORMANCE);
2345 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2346 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2347 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2348 OPTION_LSW);
2349 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2350 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2351
2352 if (lp->mode == 1) {
2353 /* Make sure BM bit is set... */
2354 hp100_page(HW_MAP);
2355 hp100_orb(HP100_BM_MASTER, BM);
2356 hp100_rxfill(dev);
2357 } else if (lp->mode == 2) {
2358 /* Enable memory mapping. Note: Don't do this when busmaster. */
2359 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2360 }
2361
2362 hp100_page(PERFORMANCE);
2363 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2364 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2365
2366 /* enable a few interrupts: */
2367 if (lp->mode == 1) { /* busmaster mode */
2368 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2369 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2370 /* HP100_RX_PACKET | */
2371 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2372 /* HP100_TX_PDA_ZERO | */
2373 HP100_TX_COMPLETE |
2374 /* HP100_MISC_ERROR | */
2375 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2376 } else {
2377 hp100_outw(HP100_RX_PACKET |
2378 HP100_RX_ERROR | HP100_SET_HB |
2379 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2380 }
2381
2382 /* Note : before hp100_set_multicast_list(), because it will play with
2383 * spinlock itself... Jean II */
2384 spin_unlock_irqrestore(&lp->lock, flags);
2385
2386 /* Enable MAC Tx and RX, set MAC modes, ... */
2387 hp100_set_multicast_list(dev);
2388 }
2389
2390 static void hp100_stop_interface(struct net_device *dev)
2391 {
2392 struct hp100_private *lp = netdev_priv(dev);
2393 int ioaddr = dev->base_addr;
2394 u_int val;
2395
2396 #ifdef HP100_DEBUG_B
2397 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2398 hp100_outw(0x4221, TRACE);
2399 #endif
2400
2401 if (lp->mode == 1)
2402 hp100_BM_shutdown(dev);
2403 else {
2404 /* Note: MMAP_DIS will be reenabled by start_interface */
2405 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2406 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2407 OPTION_LSW);
2408 val = hp100_inw(OPTION_LSW);
2409
2410 hp100_page(MAC_CTRL);
2411 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2412
2413 if (!(val & HP100_HW_RST))
2414 return; /* If reset, imm. return ... */
2415 /* ... else: busy wait until idle */
2416 for (val = 0; val < 6000; val++)
2417 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2418 hp100_page(PERFORMANCE);
2419 return;
2420 }
2421 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2422 hp100_page(PERFORMANCE);
2423 }
2424 }
2425
2426 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2427 {
2428 int i;
2429 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2430
2431 #ifdef HP100_DEBUG_B
2432 hp100_outw(0x4222, TRACE);
2433 #endif
2434
2435 hp100_page(EEPROM_CTRL);
2436 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2437 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2438 for (i = 0; i < 10000; i++)
2439 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2440 return;
2441 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2442 }
2443
2444 /* Sense connection status.
2445 * return values: LAN_10 - Connected to 10Mbit/s network
2446 * LAN_100 - Connected to 100Mbit/s network
2447 * LAN_ERR - not connected or 100Mbit/s Hub down
2448 */
2449 static int hp100_sense_lan(struct net_device *dev)
2450 {
2451 int ioaddr = dev->base_addr;
2452 u_short val_VG, val_10;
2453 struct hp100_private *lp = netdev_priv(dev);
2454
2455 #ifdef HP100_DEBUG_B
2456 hp100_outw(0x4223, TRACE);
2457 #endif
2458
2459 hp100_page(MAC_CTRL);
2460 val_10 = hp100_inb(10_LAN_CFG_1);
2461 val_VG = hp100_inb(VG_LAN_CFG_1);
2462 hp100_page(PERFORMANCE);
2463 #ifdef HP100_DEBUG
2464 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2465 dev->name, val_VG, val_10);
2466 #endif
2467
2468 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2469 return HP100_LAN_10;
2470
2471 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2472 /*
2473 * This can be overriden by dos utility, so if this has no effect,
2474 * perhaps you need to download that utility from HP and set card
2475 * back to "auto detect".
2476 */
2477 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2478 hp100_page(MAC_CTRL);
2479 hp100_outb(val_10, 10_LAN_CFG_1);
2480 hp100_page(PERFORMANCE);
2481 return HP100_LAN_COAX;
2482 }
2483
2484 /* Those cards don't have a 100 Mbit connector */
2485 if ( !strcmp(lp->id, "HWP1920") ||
2486 (lp->pci_dev &&
2487 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2488 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2489 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2490 return HP100_LAN_ERR;
2491
2492 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2493 return HP100_LAN_100;
2494 return HP100_LAN_ERR;
2495 }
2496
2497 static int hp100_down_vg_link(struct net_device *dev)
2498 {
2499 struct hp100_private *lp = netdev_priv(dev);
2500 int ioaddr = dev->base_addr;
2501 unsigned long time;
2502 long savelan, newlan;
2503
2504 #ifdef HP100_DEBUG_B
2505 hp100_outw(0x4224, TRACE);
2506 printk("hp100: %s: down_vg_link\n", dev->name);
2507 #endif
2508
2509 hp100_page(MAC_CTRL);
2510 time = jiffies + (HZ / 4);
2511 do {
2512 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2513 break;
2514 if (!in_interrupt())
2515 schedule_timeout_interruptible(1);
2516 } while (time_after(time, jiffies));
2517
2518 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2519 return 0;
2520
2521 /* Drop the VG Link by clearing the link up cmd and load addr. */
2522
2523 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2524 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2525
2526 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2527 time = jiffies + (HZ / 2);
2528 do {
2529 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2530 break;
2531 if (!in_interrupt())
2532 schedule_timeout_interruptible(1);
2533 } while (time_after(time, jiffies));
2534
2535 #ifdef HP100_DEBUG
2536 if (time_after_eq(jiffies, time))
2537 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2538 #endif
2539
2540 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2541 /* logout under traffic (even though all the status bits are cleared), */
2542 /* do this workaround to get the Rev 1 MAC in its idle state */
2543 if (lp->chip == HP100_CHIPID_LASSEN) {
2544 /* Reset VG MAC to insure it leaves the logoff state even if */
2545 /* the Hub is still emitting tones */
2546 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2547 udelay(1500); /* wait for >1ms */
2548 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2549 udelay(1500);
2550 }
2551
2552 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2553 /* to get the VG mac to full reset. This is not req.d with later chips */
2554 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2555 /* selected again! This will be left to the connect hub function to */
2556 /* perform if desired. */
2557 if (lp->chip == HP100_CHIPID_LASSEN) {
2558 /* Have to write to 10 and 100VG control registers simultaneously */
2559 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2560 newlan &= ~(HP100_VG_SEL << 16);
2561 newlan |= (HP100_DOT3_MAC) << 8;
2562 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2563 hp100_outl(newlan, 10_LAN_CFG_1);
2564
2565 /* Conditionally stall for 5sec on VG selected. */
2566 time = jiffies + (HZ * 5);
2567 do {
2568 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2569 break;
2570 if (!in_interrupt())
2571 schedule_timeout_interruptible(1);
2572 } while (time_after(time, jiffies));
2573
2574 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2575 hp100_outl(savelan, 10_LAN_CFG_1);
2576 }
2577
2578 time = jiffies + (3 * HZ); /* Timeout 3s */
2579 do {
2580 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2581 break;
2582 if (!in_interrupt())
2583 schedule_timeout_interruptible(1);
2584 } while (time_after(time, jiffies));
2585
2586 if (time_before_eq(time, jiffies)) {
2587 #ifdef HP100_DEBUG
2588 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2589 #endif
2590 return -EIO;
2591 }
2592
2593 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2594 do {
2595 if (!in_interrupt())
2596 schedule_timeout_interruptible(1);
2597 } while (time_after(time, jiffies));
2598
2599 return 0;
2600 }
2601
2602 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2603 {
2604 int ioaddr = dev->base_addr;
2605 struct hp100_private *lp = netdev_priv(dev);
2606 u_short val = 0;
2607 unsigned long time;
2608 int startst;
2609
2610 #ifdef HP100_DEBUG_B
2611 hp100_outw(0x4225, TRACE);
2612 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2613 #endif
2614
2615 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2616 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2617 * promiscuous mode change)
2618 */
2619 hp100_page(MAC_CTRL);
2620 startst = hp100_inb(VG_LAN_CFG_1);
2621 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2622 #ifdef HP100_DEBUG_TRAINING
2623 printk("hp100: %s: Start training\n", dev->name);
2624 #endif
2625
2626 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2627 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2628
2629 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2630 /* entry then temporarily put them into force 100Mbit mode */
2631 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2632 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2633
2634 /* Drop the VG link by zeroing Link Up Command and Load Address */
2635 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2636
2637 #ifdef HP100_DEBUG_TRAINING
2638 printk("hp100: %s: Bring down the link\n", dev->name);
2639 #endif
2640
2641 /* Wait for link to drop */
2642 time = jiffies + (HZ / 10);
2643 do {
2644 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2645 break;
2646 if (!in_interrupt())
2647 schedule_timeout_interruptible(1);
2648 } while (time_after(time, jiffies));
2649
2650 /* Start an addressed training and optionally request promiscuous port */
2651 if ((dev->flags) & IFF_PROMISC) {
2652 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2653 if (lp->chip == HP100_CHIPID_LASSEN)
2654 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2655 } else {
2656 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2657 /* For ETR parts we need to reset the prom. bit in the training
2658 * register, otherwise promiscious mode won't be disabled.
2659 */
2660 if (lp->chip == HP100_CHIPID_LASSEN) {
2661 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2662 }
2663 }
2664
2665 /* With ETR parts, frame format request bits can be set. */
2666 if (lp->chip == HP100_CHIPID_LASSEN)
2667 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2668
2669 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2670
2671 /* Note: Next wait could be omitted for Hood and earlier chips under */
2672 /* certain circumstances */
2673 /* TODO: check if hood/earlier and skip wait. */
2674
2675 /* Wait for either short timeout for VG tones or long for login */
2676 /* Wait for the card hardware to signalise link cable status ok... */
2677 hp100_page(MAC_CTRL);
2678 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2679 do {
2680 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2681 break;
2682 if (!in_interrupt())
2683 schedule_timeout_interruptible(1);
2684 } while (time_before(jiffies, time));
2685
2686 if (time_after_eq(jiffies, time)) {
2687 #ifdef HP100_DEBUG_TRAINING
2688 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2689 #endif
2690 } else {
2691 #ifdef HP100_DEBUG_TRAINING
2692 printk
2693 ("hp100: %s: HUB tones detected. Trying to train.\n",
2694 dev->name);
2695 #endif
2696
2697 time = jiffies + (2 * HZ); /* again a timeout */
2698 do {
2699 val = hp100_inb(VG_LAN_CFG_1);
2700 if ((val & (HP100_LINK_UP_ST))) {
2701 #ifdef HP100_DEBUG_TRAINING
2702 printk("hp100: %s: Passed training.\n", dev->name);
2703 #endif
2704 break;
2705 }
2706 if (!in_interrupt())
2707 schedule_timeout_interruptible(1);
2708 } while (time_after(time, jiffies));
2709 }
2710
2711 /* If LINK_UP_ST is set, then we are logged into the hub. */
2712 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2713 #ifdef HP100_DEBUG_TRAINING
2714 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2715 if (lp->chip == HP100_CHIPID_LASSEN) {
2716 val = hp100_inw(TRAIN_ALLOW);
2717 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2718 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2719 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2720 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2721 }
2722 #endif
2723 } else {
2724 /* If LINK_UP_ST is not set, login was not successful */
2725 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2726 if (lp->chip == HP100_CHIPID_LASSEN) {
2727 /* Check allowed Register to find out why there is a problem. */
2728 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2729 #ifdef HP100_DEBUG_TRAINING
2730 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2731 #endif
2732 if (val & HP100_MALLOW_ACCDENIED)
2733 printk("hp100: %s: HUB access denied.\n", dev->name);
2734 if (val & HP100_MALLOW_CONFIGURE)
2735 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2736 if (val & HP100_MALLOW_DUPADDR)
2737 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2738 }
2739 }
2740
2741 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2742 /* to auto-select mode */
2743
2744 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2745 hp100_page(MAC_CTRL);
2746 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2747 }
2748
2749 val = hp100_inb(VG_LAN_CFG_1);
2750
2751 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2752 hp100_page(PERFORMANCE);
2753 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2754
2755 if (val & HP100_LINK_UP_ST)
2756 return (0); /* login was ok */
2757 else {
2758 printk("hp100: %s: Training failed.\n", dev->name);
2759 hp100_down_vg_link(dev);
2760 return -EIO;
2761 }
2762 }
2763 /* no forced relogin & already link there->no training. */
2764 return -EIO;
2765 }
2766
2767 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2768 {
2769 int ioaddr = dev->base_addr;
2770 struct hp100_private *lp = netdev_priv(dev);
2771
2772 #ifdef HP100_DEBUG_B
2773 hp100_outw(0x4226, TRACE);
2774 printk("hp100: %s: cascade_reset\n", dev->name);
2775 #endif
2776
2777 if (enable) {
2778 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2779 if (lp->chip == HP100_CHIPID_LASSEN) {
2780 /* Lassen requires a PCI transmit fifo reset */
2781 hp100_page(HW_MAP);
2782 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2783 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2784 /* Wait for min. 300 ns */
2785 /* we can't use jiffies here, because it may be */
2786 /* that we have disabled the timer... */
2787 udelay(400);
2788 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2789 hp100_page(PERFORMANCE);
2790 }
2791 } else { /* bring out of reset */
2792 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2793 udelay(400);
2794 hp100_page(PERFORMANCE);
2795 }
2796 }
2797
2798 #ifdef HP100_DEBUG
2799 void hp100_RegisterDump(struct net_device *dev)
2800 {
2801 int ioaddr = dev->base_addr;
2802 int Page;
2803 int Register;
2804
2805 /* Dump common registers */
2806 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2807 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2808 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2809 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2810 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2811
2812 /* Dump paged registers */
2813 for (Page = 0; Page < 8; Page++) {
2814 /* Dump registers */
2815 printk("page: 0x%.2x\n", Page);
2816 outw(Page, ioaddr + 0x02);
2817 for (Register = 0x8; Register < 0x22; Register += 2) {
2818 /* Display Register contents except data port */
2819 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2820 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2821 }
2822 }
2823 }
2824 hp100_page(PERFORMANCE);
2825 }
2826 #endif
2827
2828
2829 static void cleanup_dev(struct net_device *d)
2830 {
2831 struct hp100_private *p = netdev_priv(d);
2832
2833 unregister_netdev(d);
2834 release_region(d->base_addr, HP100_REGION_SIZE);
2835
2836 if (p->mode == 1) /* busmaster */
2837 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2838 p->page_vaddr_algn,
2839 virt_to_whatever(d, p->page_vaddr_algn));
2840 if (p->mem_ptr_virt)
2841 iounmap(p->mem_ptr_virt);
2842
2843 free_netdev(d);
2844 }
2845
2846 #ifdef CONFIG_EISA
2847 static int __init hp100_eisa_probe (struct device *gendev)
2848 {
2849 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2850 struct eisa_device *edev = to_eisa_device(gendev);
2851 int err;
2852
2853 if (!dev)
2854 return -ENOMEM;
2855
2856 SET_NETDEV_DEV(dev, &edev->dev);
2857
2858 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2859 if (err)
2860 goto out1;
2861
2862 #ifdef HP100_DEBUG
2863 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2864 dev->base_addr);
2865 #endif
2866 dev_set_drvdata(gendev, dev);
2867 return 0;
2868 out1:
2869 free_netdev(dev);
2870 return err;
2871 }
2872
2873 static int __devexit hp100_eisa_remove (struct device *gendev)
2874 {
2875 struct net_device *dev = dev_get_drvdata(gendev);
2876 cleanup_dev(dev);
2877 return 0;
2878 }
2879
2880 static struct eisa_driver hp100_eisa_driver = {
2881 .id_table = hp100_eisa_tbl,
2882 .driver = {
2883 .name = "hp100",
2884 .probe = hp100_eisa_probe,
2885 .remove = __devexit_p (hp100_eisa_remove),
2886 }
2887 };
2888 #endif
2889
2890 #ifdef CONFIG_PCI
2891 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2892 const struct pci_device_id *ent)
2893 {
2894 struct net_device *dev;
2895 int ioaddr;
2896 u_short pci_command;
2897 int err;
2898
2899 if (pci_enable_device(pdev))
2900 return -ENODEV;
2901
2902 dev = alloc_etherdev(sizeof(struct hp100_private));
2903 if (!dev) {
2904 err = -ENOMEM;
2905 goto out0;
2906 }
2907
2908 SET_NETDEV_DEV(dev, &pdev->dev);
2909
2910 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2911 if (!(pci_command & PCI_COMMAND_IO)) {
2912 #ifdef HP100_DEBUG
2913 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2914 #endif
2915 pci_command |= PCI_COMMAND_IO;
2916 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2917 }
2918
2919 if (!(pci_command & PCI_COMMAND_MASTER)) {
2920 #ifdef HP100_DEBUG
2921 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2922 #endif
2923 pci_command |= PCI_COMMAND_MASTER;
2924 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2925 }
2926
2927 ioaddr = pci_resource_start(pdev, 0);
2928 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2929 if (err)
2930 goto out1;
2931
2932 #ifdef HP100_DEBUG
2933 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2934 #endif
2935 pci_set_drvdata(pdev, dev);
2936 return 0;
2937 out1:
2938 free_netdev(dev);
2939 out0:
2940 pci_disable_device(pdev);
2941 return err;
2942 }
2943
2944 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2945 {
2946 struct net_device *dev = pci_get_drvdata(pdev);
2947
2948 cleanup_dev(dev);
2949 pci_disable_device(pdev);
2950 }
2951
2952
2953 static struct pci_driver hp100_pci_driver = {
2954 .name = "hp100",
2955 .id_table = hp100_pci_tbl,
2956 .probe = hp100_pci_probe,
2957 .remove = __devexit_p(hp100_pci_remove),
2958 };
2959 #endif
2960
2961 /*
2962 * module section
2963 */
2964
2965 MODULE_LICENSE("GPL");
2966 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, "
2967 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2968 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2969
2970 /*
2971 * Note: to register three isa devices, use:
2972 * option hp100 hp100_port=0,0,0
2973 * to register one card at io 0x280 as eth239, use:
2974 * option hp100 hp100_port=0x280
2975 */
2976 #if defined(MODULE) && defined(CONFIG_ISA)
2977 #define HP100_DEVICES 5
2978 /* Parameters set by insmod */
2979 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2980 module_param_array(hp100_port, int, NULL, 0);
2981
2982 /* List of devices */
2983 static struct net_device *hp100_devlist[HP100_DEVICES];
2984
2985 static int __init hp100_isa_init(void)
2986 {
2987 struct net_device *dev;
2988 int i, err, cards = 0;
2989
2990 /* Don't autoprobe ISA bus */
2991 if (hp100_port[0] == 0)
2992 return -ENODEV;
2993
2994 /* Loop on all possible base addresses */
2995 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2996 dev = alloc_etherdev(sizeof(struct hp100_private));
2997 if (!dev) {
2998 printk(KERN_WARNING "hp100: no memory for network device\n");
2999 while (cards > 0)
3000 cleanup_dev(hp100_devlist[--cards]);
3001
3002 return -ENOMEM;
3003 }
3004
3005 err = hp100_isa_probe(dev, hp100_port[i]);
3006 if (!err)
3007 hp100_devlist[cards++] = dev;
3008 else
3009 free_netdev(dev);
3010 }
3011
3012 return cards > 0 ? 0 : -ENODEV;
3013 }
3014
3015 static void hp100_isa_cleanup(void)
3016 {
3017 int i;
3018
3019 for (i = 0; i < HP100_DEVICES; i++) {
3020 struct net_device *dev = hp100_devlist[i];
3021 if (dev)
3022 cleanup_dev(dev);
3023 }
3024 }
3025 #else
3026 #define hp100_isa_init() (0)
3027 #define hp100_isa_cleanup() do { } while(0)
3028 #endif
3029
3030 static int __init hp100_module_init(void)
3031 {
3032 int err;
3033
3034 err = hp100_isa_init();
3035 if (err && err != -ENODEV)
3036 goto out;
3037 #ifdef CONFIG_EISA
3038 err = eisa_driver_register(&hp100_eisa_driver);
3039 if (err && err != -ENODEV)
3040 goto out2;
3041 #endif
3042 #ifdef CONFIG_PCI
3043 err = pci_register_driver(&hp100_pci_driver);
3044 if (err && err != -ENODEV)
3045 goto out3;
3046 #endif
3047 out:
3048 return err;
3049 out3:
3050 #ifdef CONFIG_EISA
3051 eisa_driver_unregister (&hp100_eisa_driver);
3052 out2:
3053 #endif
3054 hp100_isa_cleanup();
3055 goto out;
3056 }
3057
3058
3059 static void __exit hp100_module_exit(void)
3060 {
3061 hp100_isa_cleanup();
3062 #ifdef CONFIG_EISA
3063 eisa_driver_unregister (&hp100_eisa_driver);
3064 #endif
3065 #ifdef CONFIG_PCI
3066 pci_unregister_driver (&hp100_pci_driver);
3067 #endif
3068 }
3069
3070 module_init(hp100_module_init)
3071 module_exit(hp100_module_exit)
Linux kernel - Deliverables
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